Advance your career with help from our practice exams

Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
A typical DCS has at least four layers in it's architecture. Fieldbus and DeviceNet are all under the direct control of which of the layers below?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "B"?
Alarm management is based upon the process conditions model. Which of the conditions in that model could be described as the optimal operating conditions?
IPv4 addresses are expressed in four components. Which of the terms below is used to name those four components?
A DCS collects a lot of data during the course of operating. Which of the answers below best represents the number of databases commonly used in a DCS?
Historical data can be logged through a HMI application. Which of the data storage methods below would best be described as one that looses resolution of the data, although reduces the volume of data?
There are numerous I/O modules that a typical DCS has access to. Which of the modules below is described as one that maps the data from up to 16 field devices that it supports?
The data packet of an asychronous transmission contains _____ distinct types of bits. Choose the best answer to fill in the blank from the options below.
Which of the messaging types below is best described as communication by sending a command, initiated by the scanner module, to all field device on the segment?
In IPv4, the user datagram protocol has less latency and measurable greater data throughput. Which of the answers below can be a drawback of this protocol?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the ESD system?
The standard recommended by ISA-18.2 is for 3-4 priority level alarms to be used. Which of the alarm priority levels below can best be described as the highest percentage of the total configured alarms?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "A"?
Which of the components below is required for the H1 transmission segment to function?
Which of the network components below combines two or more smaller networks working within the ISO physical and data layers?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a series of 10 coils to the slave device?
There are various subsystems within any HMI. Which of the tasks below would be the primary responsibility of the alarm subsystem?
There are several different ways to let an operator know about an alarm in any HMI. Which of the answers below would best be described as a vibrations given off by a device?
There are numerous I/O modules that a typical DCS has access to. Which of the modules below is described as one that coverts the analog signals from T/Cs and RTDs to a digital signal?
The limits of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the indication of a parameter within the set range?
In Modbus, data is read, and written in various memory ranges. Which of the answers below best represents the data type that a holding registers would use?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below is the second smallest in area covered?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a holding register to the slave device
There are several layers in the DCS architecture. Which of the levels below would have direct control over the accounting system?
A typical HMI has several subsystems attached to it. Which of the subsystems below would be involved in the guardianship HMI operating system?